NGK R7436-8 4898 Spark Plug Racing R74368

The NGK R7436-8 4898 Spark Plug Racing R74368 is engineered for high-performance ignition in demanding racing environments. Built with precision-ground electrodes and a robust 14mm thread, this plug delivers reliable spark delivery, consistent fueling, and improved throttle response across demanding rev ranges. Designed for racers and enthusiasts seeking durable construction, the R7436-8 balances heat management with peak voltage performance to minimize misfires and ensure steady ignition under extreme conditions. Trusted by professionals, it pairs compatibility with a wide range of high-performance engines and fuels, while maintaining longevity even under continuous high-RPM stress. From track days to competitive events, this NGK spark plug helps maximize power, efficiency, and repeatable lap times.